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Poet Biorefining - Emmetsburg, LLC

Industrial Organic Chemicals, Emmetsburg, Iowa. NPDES permit IA0078492, in force until Sep 30, 2031. Last 12 months: over a limit 4 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
September 2026Solids, total suspended, 30-day average2698≤ 30 mg/L8893%
September 2026Solids, total suspended, 30-day average3735.219≤ 31.1 lb/d11910%
September 2026Solids, total suspended, daily maximum2698≤ 45 mg/L5896%
September 2026Solids, total suspended, daily maximum3735.219≤ 46.7 lb/d7898%

Limits in force (12)

ParameterStatisticLimitMonths
pHdaily minimum≥ 6.3 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspended30-day average≤ 31.1 lb/dall year
Solids, total suspendeddaily maximum≤ 46.7 lb/dall year
Sulfate, total [as SO4]30-day average≤ 2630 mg/Lall year
Sulfate, total [as SO4]daily maximum≤ 2630 mg/Lall year
Sulfate, total [as SO4]30-day average≤ 5220 lb/dall year
Sulfate, total [as SO4]daily maximum≤ 5220 lb/dall year
Chlorine, total residual30-day average≤ .032 mg/Lall year
Chlorine, total residualdaily maximum≤ .032 mg/Lall year
Chlorine, total residual30-day average≤ .07 lb/dall year
Chlorine, total residualdaily maximum≤ .07 lb/dall year

How strict are these limits?

Cited limits by parameter: Iowa's rules and the federal ones.

Same industry: the 57 Chemicals and Allied Products permits in Iowa.

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Your permit document is the final word. As JSON: /api/v1/permits/IA0078492 · MCP: https://passage-data.com/mcp